Hi, I am really sorry for inconvenience. I tried uploading the data in correct format, while uploading by default its merging the content. Here is the code I am trying out : In this code when I run the script, It will display the Group name which starts with X. 
my $str = "";
open (FD, "<", "CSD.txt");
my @lines = <FD>;
close FD;

foreach (@lines) {
 if(/GROUP NAME: X[A-Z]../) {
print STDOUT $_;
 $str= $str.$_;
 open (NW, ">", "RES.txt");
print NW $str;
close NW;
}
}

[download]
My requirement is to get the List name which has Group name starts with X. I need to extract Transactions code which comes under Group name as well. The output should be 
List name:   CT08LIST
GROUP      XCT08L1   04.290 17:05
Trasactions
ROUP NAME: XCT08L1
 ----------

 MAPSETS:            AGCEM1    AGHEM1    AGMMM1    AGONM1    AGPEM1   
+ AGPUM1    AGREM1    AGRUM1    AGSEM1
                     AGSUM1    AGZ1M1    AGZ2M1    AGZ3M1    AGZ4M1   
+ AGZ5M1
 TRANSACTIONS:       ACBA      ACBE      ACBL      ACBR      ACBU     
+ AGMM      AGSU      AGTO      AST5
                     AST7      AST9      AXTO      BAC1      BCA1     
+ BCA2      BCA3      BCA4      BCA5
                     BD11      BE1A      BE44      BM16      BM17     
+ BM6A      BSL3      BSVL      BS09
                     BS11      BS12      BS13      BS14      BTM2     
+ BWR2      HMI8      IBVS      IM01
                     IM02      IM03      IM07      IM18      IM21     
+ IM25      MSOD      NPS2      STP1
                     XB01      XB02      XB03      XB04      XB05     
+ XB06      XB07      XB08      XB10
                     XB11      XB12

 GROUP NAME: XCT09L1
 ----------

[download]
I can send the input file wherein you can have a look on the file. Kindly let me know your mail id so that I can send the input file/exact requirement

In reply to Re^2: Perl Script to extract pattern and redirect to another file by Raghu1
in thread Perl Script to extract pattern and redirect to another file by Raghu1

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